1 /* 2 * drivers/net/ethernet/freescale/gianfar_ethtool.c 3 * 4 * Gianfar Ethernet Driver 5 * Ethtool support for Gianfar Enet 6 * Based on e1000 ethtool support 7 * 8 * Author: Andy Fleming 9 * Maintainer: Kumar Gala 10 * Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com> 11 * 12 * Copyright 2003-2006, 2008-2009, 2011 Freescale Semiconductor, Inc. 13 * 14 * This software may be used and distributed according to 15 * the terms of the GNU Public License, Version 2, incorporated herein 16 * by reference. 17 */ 18 19 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 20 21 #include <linux/kernel.h> 22 #include <linux/string.h> 23 #include <linux/errno.h> 24 #include <linux/interrupt.h> 25 #include <linux/delay.h> 26 #include <linux/netdevice.h> 27 #include <linux/etherdevice.h> 28 #include <linux/net_tstamp.h> 29 #include <linux/skbuff.h> 30 #include <linux/spinlock.h> 31 #include <linux/mm.h> 32 33 #include <asm/io.h> 34 #include <asm/irq.h> 35 #include <linux/uaccess.h> 36 #include <linux/module.h> 37 #include <linux/crc32.h> 38 #include <asm/types.h> 39 #include <linux/ethtool.h> 40 #include <linux/mii.h> 41 #include <linux/phy.h> 42 #include <linux/sort.h> 43 #include <linux/if_vlan.h> 44 #include <linux/of_platform.h> 45 #include <linux/fsl/ptp_qoriq.h> 46 47 #include "gianfar.h" 48 49 #define GFAR_MAX_COAL_USECS 0xffff 50 #define GFAR_MAX_COAL_FRAMES 0xff 51 static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy, 52 u64 *buf); 53 static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf); 54 static int gfar_gcoalesce(struct net_device *dev, 55 struct ethtool_coalesce *cvals); 56 static int gfar_scoalesce(struct net_device *dev, 57 struct ethtool_coalesce *cvals); 58 static void gfar_gringparam(struct net_device *dev, 59 struct ethtool_ringparam *rvals); 60 static int gfar_sringparam(struct net_device *dev, 61 struct ethtool_ringparam *rvals); 62 static void gfar_gdrvinfo(struct net_device *dev, 63 struct ethtool_drvinfo *drvinfo); 64 65 static const char stat_gstrings[][ETH_GSTRING_LEN] = { 66 /* extra stats */ 67 "rx-allocation-errors", 68 "rx-large-frame-errors", 69 "rx-short-frame-errors", 70 "rx-non-octet-errors", 71 "rx-crc-errors", 72 "rx-overrun-errors", 73 "rx-busy-errors", 74 "rx-babbling-errors", 75 "rx-truncated-frames", 76 "ethernet-bus-error", 77 "tx-babbling-errors", 78 "tx-underrun-errors", 79 "tx-timeout-errors", 80 /* rmon stats */ 81 "tx-rx-64-frames", 82 "tx-rx-65-127-frames", 83 "tx-rx-128-255-frames", 84 "tx-rx-256-511-frames", 85 "tx-rx-512-1023-frames", 86 "tx-rx-1024-1518-frames", 87 "tx-rx-1519-1522-good-vlan", 88 "rx-bytes", 89 "rx-packets", 90 "rx-fcs-errors", 91 "receive-multicast-packet", 92 "receive-broadcast-packet", 93 "rx-control-frame-packets", 94 "rx-pause-frame-packets", 95 "rx-unknown-op-code", 96 "rx-alignment-error", 97 "rx-frame-length-error", 98 "rx-code-error", 99 "rx-carrier-sense-error", 100 "rx-undersize-packets", 101 "rx-oversize-packets", 102 "rx-fragmented-frames", 103 "rx-jabber-frames", 104 "rx-dropped-frames", 105 "tx-byte-counter", 106 "tx-packets", 107 "tx-multicast-packets", 108 "tx-broadcast-packets", 109 "tx-pause-control-frames", 110 "tx-deferral-packets", 111 "tx-excessive-deferral-packets", 112 "tx-single-collision-packets", 113 "tx-multiple-collision-packets", 114 "tx-late-collision-packets", 115 "tx-excessive-collision-packets", 116 "tx-total-collision", 117 "reserved", 118 "tx-dropped-frames", 119 "tx-jabber-frames", 120 "tx-fcs-errors", 121 "tx-control-frames", 122 "tx-oversize-frames", 123 "tx-undersize-frames", 124 "tx-fragmented-frames", 125 }; 126 127 /* Fill in a buffer with the strings which correspond to the 128 * stats */ 129 static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf) 130 { 131 struct gfar_private *priv = netdev_priv(dev); 132 133 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) 134 memcpy(buf, stat_gstrings, GFAR_STATS_LEN * ETH_GSTRING_LEN); 135 else 136 memcpy(buf, stat_gstrings, 137 GFAR_EXTRA_STATS_LEN * ETH_GSTRING_LEN); 138 } 139 140 /* Fill in an array of 64-bit statistics from various sources. 141 * This array will be appended to the end of the ethtool_stats 142 * structure, and returned to user space 143 */ 144 static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy, 145 u64 *buf) 146 { 147 int i; 148 struct gfar_private *priv = netdev_priv(dev); 149 struct gfar __iomem *regs = priv->gfargrp[0].regs; 150 atomic64_t *extra = (atomic64_t *)&priv->extra_stats; 151 152 for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++) 153 buf[i] = atomic64_read(&extra[i]); 154 155 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) { 156 u32 __iomem *rmon = (u32 __iomem *) ®s->rmon; 157 158 for (; i < GFAR_STATS_LEN; i++, rmon++) 159 buf[i] = (u64) gfar_read(rmon); 160 } 161 } 162 163 static int gfar_sset_count(struct net_device *dev, int sset) 164 { 165 struct gfar_private *priv = netdev_priv(dev); 166 167 switch (sset) { 168 case ETH_SS_STATS: 169 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) 170 return GFAR_STATS_LEN; 171 else 172 return GFAR_EXTRA_STATS_LEN; 173 default: 174 return -EOPNOTSUPP; 175 } 176 } 177 178 /* Fills in the drvinfo structure with some basic info */ 179 static void gfar_gdrvinfo(struct net_device *dev, 180 struct ethtool_drvinfo *drvinfo) 181 { 182 strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver)); 183 strlcpy(drvinfo->version, gfar_driver_version, 184 sizeof(drvinfo->version)); 185 strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version)); 186 strlcpy(drvinfo->bus_info, "N/A", sizeof(drvinfo->bus_info)); 187 } 188 189 /* Return the length of the register structure */ 190 static int gfar_reglen(struct net_device *dev) 191 { 192 return sizeof (struct gfar); 193 } 194 195 /* Return a dump of the GFAR register space */ 196 static void gfar_get_regs(struct net_device *dev, struct ethtool_regs *regs, 197 void *regbuf) 198 { 199 int i; 200 struct gfar_private *priv = netdev_priv(dev); 201 u32 __iomem *theregs = (u32 __iomem *) priv->gfargrp[0].regs; 202 u32 *buf = (u32 *) regbuf; 203 204 for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++) 205 buf[i] = gfar_read(&theregs[i]); 206 } 207 208 /* Convert microseconds to ethernet clock ticks, which changes 209 * depending on what speed the controller is running at */ 210 static unsigned int gfar_usecs2ticks(struct gfar_private *priv, 211 unsigned int usecs) 212 { 213 struct net_device *ndev = priv->ndev; 214 struct phy_device *phydev = ndev->phydev; 215 unsigned int count; 216 217 /* The timer is different, depending on the interface speed */ 218 switch (phydev->speed) { 219 case SPEED_1000: 220 count = GFAR_GBIT_TIME; 221 break; 222 case SPEED_100: 223 count = GFAR_100_TIME; 224 break; 225 case SPEED_10: 226 default: 227 count = GFAR_10_TIME; 228 break; 229 } 230 231 /* Make sure we return a number greater than 0 232 * if usecs > 0 */ 233 return DIV_ROUND_UP(usecs * 1000, count); 234 } 235 236 /* Convert ethernet clock ticks to microseconds */ 237 static unsigned int gfar_ticks2usecs(struct gfar_private *priv, 238 unsigned int ticks) 239 { 240 struct net_device *ndev = priv->ndev; 241 struct phy_device *phydev = ndev->phydev; 242 unsigned int count; 243 244 /* The timer is different, depending on the interface speed */ 245 switch (phydev->speed) { 246 case SPEED_1000: 247 count = GFAR_GBIT_TIME; 248 break; 249 case SPEED_100: 250 count = GFAR_100_TIME; 251 break; 252 case SPEED_10: 253 default: 254 count = GFAR_10_TIME; 255 break; 256 } 257 258 /* Make sure we return a number greater than 0 */ 259 /* if ticks is > 0 */ 260 return (ticks * count) / 1000; 261 } 262 263 /* Get the coalescing parameters, and put them in the cvals 264 * structure. */ 265 static int gfar_gcoalesce(struct net_device *dev, 266 struct ethtool_coalesce *cvals) 267 { 268 struct gfar_private *priv = netdev_priv(dev); 269 struct gfar_priv_rx_q *rx_queue = NULL; 270 struct gfar_priv_tx_q *tx_queue = NULL; 271 unsigned long rxtime; 272 unsigned long rxcount; 273 unsigned long txtime; 274 unsigned long txcount; 275 276 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE)) 277 return -EOPNOTSUPP; 278 279 if (!dev->phydev) 280 return -ENODEV; 281 282 rx_queue = priv->rx_queue[0]; 283 tx_queue = priv->tx_queue[0]; 284 285 rxtime = get_ictt_value(rx_queue->rxic); 286 rxcount = get_icft_value(rx_queue->rxic); 287 txtime = get_ictt_value(tx_queue->txic); 288 txcount = get_icft_value(tx_queue->txic); 289 cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime); 290 cvals->rx_max_coalesced_frames = rxcount; 291 292 cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, txtime); 293 cvals->tx_max_coalesced_frames = txcount; 294 295 cvals->use_adaptive_rx_coalesce = 0; 296 cvals->use_adaptive_tx_coalesce = 0; 297 298 cvals->pkt_rate_low = 0; 299 cvals->rx_coalesce_usecs_low = 0; 300 cvals->rx_max_coalesced_frames_low = 0; 301 cvals->tx_coalesce_usecs_low = 0; 302 cvals->tx_max_coalesced_frames_low = 0; 303 304 /* When the packet rate is below pkt_rate_high but above 305 * pkt_rate_low (both measured in packets per second) the 306 * normal {rx,tx}_* coalescing parameters are used. 307 */ 308 309 /* When the packet rate is (measured in packets per second) 310 * is above pkt_rate_high, the {rx,tx}_*_high parameters are 311 * used. 312 */ 313 cvals->pkt_rate_high = 0; 314 cvals->rx_coalesce_usecs_high = 0; 315 cvals->rx_max_coalesced_frames_high = 0; 316 cvals->tx_coalesce_usecs_high = 0; 317 cvals->tx_max_coalesced_frames_high = 0; 318 319 /* How often to do adaptive coalescing packet rate sampling, 320 * measured in seconds. Must not be zero. 321 */ 322 cvals->rate_sample_interval = 0; 323 324 return 0; 325 } 326 327 /* Change the coalescing values. 328 * Both cvals->*_usecs and cvals->*_frames have to be > 0 329 * in order for coalescing to be active 330 */ 331 static int gfar_scoalesce(struct net_device *dev, 332 struct ethtool_coalesce *cvals) 333 { 334 struct gfar_private *priv = netdev_priv(dev); 335 int i, err = 0; 336 337 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE)) 338 return -EOPNOTSUPP; 339 340 if (!dev->phydev) 341 return -ENODEV; 342 343 /* Check the bounds of the values */ 344 if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) { 345 netdev_info(dev, "Coalescing is limited to %d microseconds\n", 346 GFAR_MAX_COAL_USECS); 347 return -EINVAL; 348 } 349 350 if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) { 351 netdev_info(dev, "Coalescing is limited to %d frames\n", 352 GFAR_MAX_COAL_FRAMES); 353 return -EINVAL; 354 } 355 356 /* Check the bounds of the values */ 357 if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) { 358 netdev_info(dev, "Coalescing is limited to %d microseconds\n", 359 GFAR_MAX_COAL_USECS); 360 return -EINVAL; 361 } 362 363 if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) { 364 netdev_info(dev, "Coalescing is limited to %d frames\n", 365 GFAR_MAX_COAL_FRAMES); 366 return -EINVAL; 367 } 368 369 while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state)) 370 cpu_relax(); 371 372 /* Set up rx coalescing */ 373 if ((cvals->rx_coalesce_usecs == 0) || 374 (cvals->rx_max_coalesced_frames == 0)) { 375 for (i = 0; i < priv->num_rx_queues; i++) 376 priv->rx_queue[i]->rxcoalescing = 0; 377 } else { 378 for (i = 0; i < priv->num_rx_queues; i++) 379 priv->rx_queue[i]->rxcoalescing = 1; 380 } 381 382 for (i = 0; i < priv->num_rx_queues; i++) { 383 priv->rx_queue[i]->rxic = mk_ic_value( 384 cvals->rx_max_coalesced_frames, 385 gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs)); 386 } 387 388 /* Set up tx coalescing */ 389 if ((cvals->tx_coalesce_usecs == 0) || 390 (cvals->tx_max_coalesced_frames == 0)) { 391 for (i = 0; i < priv->num_tx_queues; i++) 392 priv->tx_queue[i]->txcoalescing = 0; 393 } else { 394 for (i = 0; i < priv->num_tx_queues; i++) 395 priv->tx_queue[i]->txcoalescing = 1; 396 } 397 398 for (i = 0; i < priv->num_tx_queues; i++) { 399 priv->tx_queue[i]->txic = mk_ic_value( 400 cvals->tx_max_coalesced_frames, 401 gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs)); 402 } 403 404 if (dev->flags & IFF_UP) { 405 stop_gfar(dev); 406 err = startup_gfar(dev); 407 } else { 408 gfar_mac_reset(priv); 409 } 410 411 clear_bit_unlock(GFAR_RESETTING, &priv->state); 412 413 return err; 414 } 415 416 /* Fills in rvals with the current ring parameters. Currently, 417 * rx, rx_mini, and rx_jumbo rings are the same size, as mini and 418 * jumbo are ignored by the driver */ 419 static void gfar_gringparam(struct net_device *dev, 420 struct ethtool_ringparam *rvals) 421 { 422 struct gfar_private *priv = netdev_priv(dev); 423 struct gfar_priv_tx_q *tx_queue = NULL; 424 struct gfar_priv_rx_q *rx_queue = NULL; 425 426 tx_queue = priv->tx_queue[0]; 427 rx_queue = priv->rx_queue[0]; 428 429 rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE; 430 rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE; 431 rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE; 432 rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE; 433 434 /* Values changeable by the user. The valid values are 435 * in the range 1 to the "*_max_pending" counterpart above. 436 */ 437 rvals->rx_pending = rx_queue->rx_ring_size; 438 rvals->rx_mini_pending = rx_queue->rx_ring_size; 439 rvals->rx_jumbo_pending = rx_queue->rx_ring_size; 440 rvals->tx_pending = tx_queue->tx_ring_size; 441 } 442 443 /* Change the current ring parameters, stopping the controller if 444 * necessary so that we don't mess things up while we're in motion. 445 */ 446 static int gfar_sringparam(struct net_device *dev, 447 struct ethtool_ringparam *rvals) 448 { 449 struct gfar_private *priv = netdev_priv(dev); 450 int err = 0, i; 451 452 if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE) 453 return -EINVAL; 454 455 if (!is_power_of_2(rvals->rx_pending)) { 456 netdev_err(dev, "Ring sizes must be a power of 2\n"); 457 return -EINVAL; 458 } 459 460 if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE) 461 return -EINVAL; 462 463 if (!is_power_of_2(rvals->tx_pending)) { 464 netdev_err(dev, "Ring sizes must be a power of 2\n"); 465 return -EINVAL; 466 } 467 468 while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state)) 469 cpu_relax(); 470 471 if (dev->flags & IFF_UP) 472 stop_gfar(dev); 473 474 /* Change the sizes */ 475 for (i = 0; i < priv->num_rx_queues; i++) 476 priv->rx_queue[i]->rx_ring_size = rvals->rx_pending; 477 478 for (i = 0; i < priv->num_tx_queues; i++) 479 priv->tx_queue[i]->tx_ring_size = rvals->tx_pending; 480 481 /* Rebuild the rings with the new size */ 482 if (dev->flags & IFF_UP) 483 err = startup_gfar(dev); 484 485 clear_bit_unlock(GFAR_RESETTING, &priv->state); 486 487 return err; 488 } 489 490 static void gfar_gpauseparam(struct net_device *dev, 491 struct ethtool_pauseparam *epause) 492 { 493 struct gfar_private *priv = netdev_priv(dev); 494 495 epause->autoneg = !!priv->pause_aneg_en; 496 epause->rx_pause = !!priv->rx_pause_en; 497 epause->tx_pause = !!priv->tx_pause_en; 498 } 499 500 static int gfar_spauseparam(struct net_device *dev, 501 struct ethtool_pauseparam *epause) 502 { 503 struct gfar_private *priv = netdev_priv(dev); 504 struct phy_device *phydev = dev->phydev; 505 struct gfar __iomem *regs = priv->gfargrp[0].regs; 506 507 if (!phydev) 508 return -ENODEV; 509 510 if (!phy_validate_pause(phydev, epause)) 511 return -EINVAL; 512 513 priv->rx_pause_en = priv->tx_pause_en = 0; 514 phy_set_asym_pause(phydev, epause->rx_pause, epause->tx_pause); 515 if (epause->rx_pause) { 516 priv->rx_pause_en = 1; 517 518 if (epause->tx_pause) { 519 priv->tx_pause_en = 1; 520 } 521 } else if (epause->tx_pause) { 522 priv->tx_pause_en = 1; 523 } 524 525 if (epause->autoneg) 526 priv->pause_aneg_en = 1; 527 else 528 priv->pause_aneg_en = 0; 529 530 if (!epause->autoneg) { 531 u32 tempval = gfar_read(®s->maccfg1); 532 533 tempval &= ~(MACCFG1_TX_FLOW | MACCFG1_RX_FLOW); 534 535 priv->tx_actual_en = 0; 536 if (priv->tx_pause_en) { 537 priv->tx_actual_en = 1; 538 tempval |= MACCFG1_TX_FLOW; 539 } 540 541 if (priv->rx_pause_en) 542 tempval |= MACCFG1_RX_FLOW; 543 gfar_write(®s->maccfg1, tempval); 544 } 545 546 return 0; 547 } 548 549 int gfar_set_features(struct net_device *dev, netdev_features_t features) 550 { 551 netdev_features_t changed = dev->features ^ features; 552 struct gfar_private *priv = netdev_priv(dev); 553 int err = 0; 554 555 if (!(changed & (NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | 556 NETIF_F_RXCSUM))) 557 return 0; 558 559 while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state)) 560 cpu_relax(); 561 562 dev->features = features; 563 564 if (dev->flags & IFF_UP) { 565 /* Now we take down the rings to rebuild them */ 566 stop_gfar(dev); 567 err = startup_gfar(dev); 568 } else { 569 gfar_mac_reset(priv); 570 } 571 572 clear_bit_unlock(GFAR_RESETTING, &priv->state); 573 574 return err; 575 } 576 577 static uint32_t gfar_get_msglevel(struct net_device *dev) 578 { 579 struct gfar_private *priv = netdev_priv(dev); 580 581 return priv->msg_enable; 582 } 583 584 static void gfar_set_msglevel(struct net_device *dev, uint32_t data) 585 { 586 struct gfar_private *priv = netdev_priv(dev); 587 588 priv->msg_enable = data; 589 } 590 591 #ifdef CONFIG_PM 592 static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) 593 { 594 struct gfar_private *priv = netdev_priv(dev); 595 596 wol->supported = 0; 597 wol->wolopts = 0; 598 599 if (priv->wol_supported & GFAR_WOL_MAGIC) 600 wol->supported |= WAKE_MAGIC; 601 602 if (priv->wol_supported & GFAR_WOL_FILER_UCAST) 603 wol->supported |= WAKE_UCAST; 604 605 if (priv->wol_opts & GFAR_WOL_MAGIC) 606 wol->wolopts |= WAKE_MAGIC; 607 608 if (priv->wol_opts & GFAR_WOL_FILER_UCAST) 609 wol->wolopts |= WAKE_UCAST; 610 } 611 612 static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) 613 { 614 struct gfar_private *priv = netdev_priv(dev); 615 u16 wol_opts = 0; 616 int err; 617 618 if (!priv->wol_supported && wol->wolopts) 619 return -EINVAL; 620 621 if (wol->wolopts & ~(WAKE_MAGIC | WAKE_UCAST)) 622 return -EINVAL; 623 624 if (wol->wolopts & WAKE_MAGIC) { 625 wol_opts |= GFAR_WOL_MAGIC; 626 } else { 627 if (wol->wolopts & WAKE_UCAST) 628 wol_opts |= GFAR_WOL_FILER_UCAST; 629 } 630 631 wol_opts &= priv->wol_supported; 632 priv->wol_opts = 0; 633 634 err = device_set_wakeup_enable(priv->dev, wol_opts); 635 if (err) 636 return err; 637 638 priv->wol_opts = wol_opts; 639 640 return 0; 641 } 642 #endif 643 644 static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow) 645 { 646 u32 fcr = 0x0, fpr = FPR_FILER_MASK; 647 648 if (ethflow & RXH_L2DA) { 649 fcr = RQFCR_PID_DAH | RQFCR_CMP_NOMATCH | 650 RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0; 651 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr; 652 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr; 653 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr); 654 priv->cur_filer_idx = priv->cur_filer_idx - 1; 655 656 fcr = RQFCR_PID_DAL | RQFCR_CMP_NOMATCH | 657 RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0; 658 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr; 659 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr; 660 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr); 661 priv->cur_filer_idx = priv->cur_filer_idx - 1; 662 } 663 664 if (ethflow & RXH_VLAN) { 665 fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH | 666 RQFCR_AND | RQFCR_HASHTBL_0; 667 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr); 668 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr; 669 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr; 670 priv->cur_filer_idx = priv->cur_filer_idx - 1; 671 } 672 673 if (ethflow & RXH_IP_SRC) { 674 fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH | 675 RQFCR_AND | RQFCR_HASHTBL_0; 676 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr; 677 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr; 678 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr); 679 priv->cur_filer_idx = priv->cur_filer_idx - 1; 680 } 681 682 if (ethflow & (RXH_IP_DST)) { 683 fcr = RQFCR_PID_DIA | RQFCR_CMP_NOMATCH | RQFCR_HASH | 684 RQFCR_AND | RQFCR_HASHTBL_0; 685 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr; 686 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr; 687 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr); 688 priv->cur_filer_idx = priv->cur_filer_idx - 1; 689 } 690 691 if (ethflow & RXH_L3_PROTO) { 692 fcr = RQFCR_PID_L4P | RQFCR_CMP_NOMATCH | RQFCR_HASH | 693 RQFCR_AND | RQFCR_HASHTBL_0; 694 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr; 695 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr; 696 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr); 697 priv->cur_filer_idx = priv->cur_filer_idx - 1; 698 } 699 700 if (ethflow & RXH_L4_B_0_1) { 701 fcr = RQFCR_PID_SPT | RQFCR_CMP_NOMATCH | RQFCR_HASH | 702 RQFCR_AND | RQFCR_HASHTBL_0; 703 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr; 704 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr; 705 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr); 706 priv->cur_filer_idx = priv->cur_filer_idx - 1; 707 } 708 709 if (ethflow & RXH_L4_B_2_3) { 710 fcr = RQFCR_PID_DPT | RQFCR_CMP_NOMATCH | RQFCR_HASH | 711 RQFCR_AND | RQFCR_HASHTBL_0; 712 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr; 713 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr; 714 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr); 715 priv->cur_filer_idx = priv->cur_filer_idx - 1; 716 } 717 } 718 719 static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow, 720 u64 class) 721 { 722 unsigned int cmp_rqfpr; 723 unsigned int *local_rqfpr; 724 unsigned int *local_rqfcr; 725 int i = 0x0, k = 0x0; 726 int j = MAX_FILER_IDX, l = 0x0; 727 int ret = 1; 728 729 local_rqfpr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int), 730 GFP_KERNEL); 731 local_rqfcr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int), 732 GFP_KERNEL); 733 if (!local_rqfpr || !local_rqfcr) { 734 ret = 0; 735 goto err; 736 } 737 738 switch (class) { 739 case TCP_V4_FLOW: 740 cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP; 741 break; 742 case UDP_V4_FLOW: 743 cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP; 744 break; 745 case TCP_V6_FLOW: 746 cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP; 747 break; 748 case UDP_V6_FLOW: 749 cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP; 750 break; 751 default: 752 netdev_err(priv->ndev, 753 "Right now this class is not supported\n"); 754 ret = 0; 755 goto err; 756 } 757 758 for (i = 0; i < MAX_FILER_IDX + 1; i++) { 759 local_rqfpr[j] = priv->ftp_rqfpr[i]; 760 local_rqfcr[j] = priv->ftp_rqfcr[i]; 761 j--; 762 if ((priv->ftp_rqfcr[i] == 763 (RQFCR_PID_PARSE | RQFCR_CLE | RQFCR_AND)) && 764 (priv->ftp_rqfpr[i] == cmp_rqfpr)) 765 break; 766 } 767 768 if (i == MAX_FILER_IDX + 1) { 769 netdev_err(priv->ndev, 770 "No parse rule found, can't create hash rules\n"); 771 ret = 0; 772 goto err; 773 } 774 775 /* If a match was found, then it begins the starting of a cluster rule 776 * if it was already programmed, we need to overwrite these rules 777 */ 778 for (l = i+1; l < MAX_FILER_IDX; l++) { 779 if ((priv->ftp_rqfcr[l] & RQFCR_CLE) && 780 !(priv->ftp_rqfcr[l] & RQFCR_AND)) { 781 priv->ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT | 782 RQFCR_HASHTBL_0 | RQFCR_PID_MASK; 783 priv->ftp_rqfpr[l] = FPR_FILER_MASK; 784 gfar_write_filer(priv, l, priv->ftp_rqfcr[l], 785 priv->ftp_rqfpr[l]); 786 break; 787 } 788 789 if (!(priv->ftp_rqfcr[l] & RQFCR_CLE) && 790 (priv->ftp_rqfcr[l] & RQFCR_AND)) 791 continue; 792 else { 793 local_rqfpr[j] = priv->ftp_rqfpr[l]; 794 local_rqfcr[j] = priv->ftp_rqfcr[l]; 795 j--; 796 } 797 } 798 799 priv->cur_filer_idx = l - 1; 800 801 /* hash rules */ 802 ethflow_to_filer_rules(priv, ethflow); 803 804 /* Write back the popped out rules again */ 805 for (k = j+1; k < MAX_FILER_IDX; k++) { 806 priv->ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k]; 807 priv->ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k]; 808 gfar_write_filer(priv, priv->cur_filer_idx, 809 local_rqfcr[k], local_rqfpr[k]); 810 if (!priv->cur_filer_idx) 811 break; 812 priv->cur_filer_idx = priv->cur_filer_idx - 1; 813 } 814 815 err: 816 kfree(local_rqfcr); 817 kfree(local_rqfpr); 818 return ret; 819 } 820 821 static int gfar_set_hash_opts(struct gfar_private *priv, 822 struct ethtool_rxnfc *cmd) 823 { 824 /* write the filer rules here */ 825 if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type)) 826 return -EINVAL; 827 828 return 0; 829 } 830 831 static int gfar_check_filer_hardware(struct gfar_private *priv) 832 { 833 struct gfar __iomem *regs = priv->gfargrp[0].regs; 834 u32 i; 835 836 /* Check if we are in FIFO mode */ 837 i = gfar_read(®s->ecntrl); 838 i &= ECNTRL_FIFM; 839 if (i == ECNTRL_FIFM) { 840 netdev_notice(priv->ndev, "Interface in FIFO mode\n"); 841 i = gfar_read(®s->rctrl); 842 i &= RCTRL_PRSDEP_MASK | RCTRL_PRSFM; 843 if (i == (RCTRL_PRSDEP_MASK | RCTRL_PRSFM)) { 844 netdev_info(priv->ndev, 845 "Receive Queue Filtering enabled\n"); 846 } else { 847 netdev_warn(priv->ndev, 848 "Receive Queue Filtering disabled\n"); 849 return -EOPNOTSUPP; 850 } 851 } 852 /* Or in standard mode */ 853 else { 854 i = gfar_read(®s->rctrl); 855 i &= RCTRL_PRSDEP_MASK; 856 if (i == RCTRL_PRSDEP_MASK) { 857 netdev_info(priv->ndev, 858 "Receive Queue Filtering enabled\n"); 859 } else { 860 netdev_warn(priv->ndev, 861 "Receive Queue Filtering disabled\n"); 862 return -EOPNOTSUPP; 863 } 864 } 865 866 /* Sets the properties for arbitrary filer rule 867 * to the first 4 Layer 4 Bytes 868 */ 869 gfar_write(®s->rbifx, 0xC0C1C2C3); 870 return 0; 871 } 872 873 /* Write a mask to filer cache */ 874 static void gfar_set_mask(u32 mask, struct filer_table *tab) 875 { 876 tab->fe[tab->index].ctrl = RQFCR_AND | RQFCR_PID_MASK | RQFCR_CMP_EXACT; 877 tab->fe[tab->index].prop = mask; 878 tab->index++; 879 } 880 881 /* Sets parse bits (e.g. IP or TCP) */ 882 static void gfar_set_parse_bits(u32 value, u32 mask, struct filer_table *tab) 883 { 884 gfar_set_mask(mask, tab); 885 tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_PID_PARSE | 886 RQFCR_AND; 887 tab->fe[tab->index].prop = value; 888 tab->index++; 889 } 890 891 static void gfar_set_general_attribute(u32 value, u32 mask, u32 flag, 892 struct filer_table *tab) 893 { 894 gfar_set_mask(mask, tab); 895 tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_AND | flag; 896 tab->fe[tab->index].prop = value; 897 tab->index++; 898 } 899 900 /* For setting a tuple of value and mask of type flag 901 * Example: 902 * IP-Src = 10.0.0.0/255.0.0.0 903 * value: 0x0A000000 mask: FF000000 flag: RQFPR_IPV4 904 * 905 * Ethtool gives us a value=0 and mask=~0 for don't care a tuple 906 * For a don't care mask it gives us a 0 907 * 908 * The check if don't care and the mask adjustment if mask=0 is done for VLAN 909 * and MAC stuff on an upper level (due to missing information on this level). 910 * For these guys we can discard them if they are value=0 and mask=0. 911 * 912 * Further the all masks are one-padded for better hardware efficiency. 913 */ 914 static void gfar_set_attribute(u32 value, u32 mask, u32 flag, 915 struct filer_table *tab) 916 { 917 switch (flag) { 918 /* 3bit */ 919 case RQFCR_PID_PRI: 920 if (!(value | mask)) 921 return; 922 mask |= RQFCR_PID_PRI_MASK; 923 break; 924 /* 8bit */ 925 case RQFCR_PID_L4P: 926 case RQFCR_PID_TOS: 927 if (!~(mask | RQFCR_PID_L4P_MASK)) 928 return; 929 if (!mask) 930 mask = ~0; 931 else 932 mask |= RQFCR_PID_L4P_MASK; 933 break; 934 /* 12bit */ 935 case RQFCR_PID_VID: 936 if (!(value | mask)) 937 return; 938 mask |= RQFCR_PID_VID_MASK; 939 break; 940 /* 16bit */ 941 case RQFCR_PID_DPT: 942 case RQFCR_PID_SPT: 943 case RQFCR_PID_ETY: 944 if (!~(mask | RQFCR_PID_PORT_MASK)) 945 return; 946 if (!mask) 947 mask = ~0; 948 else 949 mask |= RQFCR_PID_PORT_MASK; 950 break; 951 /* 24bit */ 952 case RQFCR_PID_DAH: 953 case RQFCR_PID_DAL: 954 case RQFCR_PID_SAH: 955 case RQFCR_PID_SAL: 956 if (!(value | mask)) 957 return; 958 mask |= RQFCR_PID_MAC_MASK; 959 break; 960 /* for all real 32bit masks */ 961 default: 962 if (!~mask) 963 return; 964 if (!mask) 965 mask = ~0; 966 break; 967 } 968 gfar_set_general_attribute(value, mask, flag, tab); 969 } 970 971 /* Translates value and mask for UDP, TCP or SCTP */ 972 static void gfar_set_basic_ip(struct ethtool_tcpip4_spec *value, 973 struct ethtool_tcpip4_spec *mask, 974 struct filer_table *tab) 975 { 976 gfar_set_attribute(be32_to_cpu(value->ip4src), 977 be32_to_cpu(mask->ip4src), 978 RQFCR_PID_SIA, tab); 979 gfar_set_attribute(be32_to_cpu(value->ip4dst), 980 be32_to_cpu(mask->ip4dst), 981 RQFCR_PID_DIA, tab); 982 gfar_set_attribute(be16_to_cpu(value->pdst), 983 be16_to_cpu(mask->pdst), 984 RQFCR_PID_DPT, tab); 985 gfar_set_attribute(be16_to_cpu(value->psrc), 986 be16_to_cpu(mask->psrc), 987 RQFCR_PID_SPT, tab); 988 gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab); 989 } 990 991 /* Translates value and mask for RAW-IP4 */ 992 static void gfar_set_user_ip(struct ethtool_usrip4_spec *value, 993 struct ethtool_usrip4_spec *mask, 994 struct filer_table *tab) 995 { 996 gfar_set_attribute(be32_to_cpu(value->ip4src), 997 be32_to_cpu(mask->ip4src), 998 RQFCR_PID_SIA, tab); 999 gfar_set_attribute(be32_to_cpu(value->ip4dst), 1000 be32_to_cpu(mask->ip4dst), 1001 RQFCR_PID_DIA, tab); 1002 gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab); 1003 gfar_set_attribute(value->proto, mask->proto, RQFCR_PID_L4P, tab); 1004 gfar_set_attribute(be32_to_cpu(value->l4_4_bytes), 1005 be32_to_cpu(mask->l4_4_bytes), 1006 RQFCR_PID_ARB, tab); 1007 1008 } 1009 1010 /* Translates value and mask for ETHER spec */ 1011 static void gfar_set_ether(struct ethhdr *value, struct ethhdr *mask, 1012 struct filer_table *tab) 1013 { 1014 u32 upper_temp_mask = 0; 1015 u32 lower_temp_mask = 0; 1016 1017 /* Source address */ 1018 if (!is_broadcast_ether_addr(mask->h_source)) { 1019 if (is_zero_ether_addr(mask->h_source)) { 1020 upper_temp_mask = 0xFFFFFFFF; 1021 lower_temp_mask = 0xFFFFFFFF; 1022 } else { 1023 upper_temp_mask = mask->h_source[0] << 16 | 1024 mask->h_source[1] << 8 | 1025 mask->h_source[2]; 1026 lower_temp_mask = mask->h_source[3] << 16 | 1027 mask->h_source[4] << 8 | 1028 mask->h_source[5]; 1029 } 1030 /* Upper 24bit */ 1031 gfar_set_attribute(value->h_source[0] << 16 | 1032 value->h_source[1] << 8 | 1033 value->h_source[2], 1034 upper_temp_mask, RQFCR_PID_SAH, tab); 1035 /* And the same for the lower part */ 1036 gfar_set_attribute(value->h_source[3] << 16 | 1037 value->h_source[4] << 8 | 1038 value->h_source[5], 1039 lower_temp_mask, RQFCR_PID_SAL, tab); 1040 } 1041 /* Destination address */ 1042 if (!is_broadcast_ether_addr(mask->h_dest)) { 1043 /* Special for destination is limited broadcast */ 1044 if ((is_broadcast_ether_addr(value->h_dest) && 1045 is_zero_ether_addr(mask->h_dest))) { 1046 gfar_set_parse_bits(RQFPR_EBC, RQFPR_EBC, tab); 1047 } else { 1048 if (is_zero_ether_addr(mask->h_dest)) { 1049 upper_temp_mask = 0xFFFFFFFF; 1050 lower_temp_mask = 0xFFFFFFFF; 1051 } else { 1052 upper_temp_mask = mask->h_dest[0] << 16 | 1053 mask->h_dest[1] << 8 | 1054 mask->h_dest[2]; 1055 lower_temp_mask = mask->h_dest[3] << 16 | 1056 mask->h_dest[4] << 8 | 1057 mask->h_dest[5]; 1058 } 1059 1060 /* Upper 24bit */ 1061 gfar_set_attribute(value->h_dest[0] << 16 | 1062 value->h_dest[1] << 8 | 1063 value->h_dest[2], 1064 upper_temp_mask, RQFCR_PID_DAH, tab); 1065 /* And the same for the lower part */ 1066 gfar_set_attribute(value->h_dest[3] << 16 | 1067 value->h_dest[4] << 8 | 1068 value->h_dest[5], 1069 lower_temp_mask, RQFCR_PID_DAL, tab); 1070 } 1071 } 1072 1073 gfar_set_attribute(be16_to_cpu(value->h_proto), 1074 be16_to_cpu(mask->h_proto), 1075 RQFCR_PID_ETY, tab); 1076 } 1077 1078 static inline u32 vlan_tci_vid(struct ethtool_rx_flow_spec *rule) 1079 { 1080 return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_VID_MASK; 1081 } 1082 1083 static inline u32 vlan_tci_vidm(struct ethtool_rx_flow_spec *rule) 1084 { 1085 return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_VID_MASK; 1086 } 1087 1088 static inline u32 vlan_tci_cfi(struct ethtool_rx_flow_spec *rule) 1089 { 1090 return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_CFI_MASK; 1091 } 1092 1093 static inline u32 vlan_tci_cfim(struct ethtool_rx_flow_spec *rule) 1094 { 1095 return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_CFI_MASK; 1096 } 1097 1098 static inline u32 vlan_tci_prio(struct ethtool_rx_flow_spec *rule) 1099 { 1100 return (be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_PRIO_MASK) >> 1101 VLAN_PRIO_SHIFT; 1102 } 1103 1104 static inline u32 vlan_tci_priom(struct ethtool_rx_flow_spec *rule) 1105 { 1106 return (be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_PRIO_MASK) >> 1107 VLAN_PRIO_SHIFT; 1108 } 1109 1110 /* Convert a rule to binary filter format of gianfar */ 1111 static int gfar_convert_to_filer(struct ethtool_rx_flow_spec *rule, 1112 struct filer_table *tab) 1113 { 1114 u32 vlan = 0, vlan_mask = 0; 1115 u32 id = 0, id_mask = 0; 1116 u32 cfi = 0, cfi_mask = 0; 1117 u32 prio = 0, prio_mask = 0; 1118 u32 old_index = tab->index; 1119 1120 /* Check if vlan is wanted */ 1121 if ((rule->flow_type & FLOW_EXT) && 1122 (rule->m_ext.vlan_tci != cpu_to_be16(0xFFFF))) { 1123 if (!rule->m_ext.vlan_tci) 1124 rule->m_ext.vlan_tci = cpu_to_be16(0xFFFF); 1125 1126 vlan = RQFPR_VLN; 1127 vlan_mask = RQFPR_VLN; 1128 1129 /* Separate the fields */ 1130 id = vlan_tci_vid(rule); 1131 id_mask = vlan_tci_vidm(rule); 1132 cfi = vlan_tci_cfi(rule); 1133 cfi_mask = vlan_tci_cfim(rule); 1134 prio = vlan_tci_prio(rule); 1135 prio_mask = vlan_tci_priom(rule); 1136 1137 if (cfi == VLAN_TAG_PRESENT && cfi_mask == VLAN_TAG_PRESENT) { 1138 vlan |= RQFPR_CFI; 1139 vlan_mask |= RQFPR_CFI; 1140 } else if (cfi != VLAN_TAG_PRESENT && 1141 cfi_mask == VLAN_TAG_PRESENT) { 1142 vlan_mask |= RQFPR_CFI; 1143 } 1144 } 1145 1146 switch (rule->flow_type & ~FLOW_EXT) { 1147 case TCP_V4_FLOW: 1148 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_TCP | vlan, 1149 RQFPR_IPV4 | RQFPR_TCP | vlan_mask, tab); 1150 gfar_set_basic_ip(&rule->h_u.tcp_ip4_spec, 1151 &rule->m_u.tcp_ip4_spec, tab); 1152 break; 1153 case UDP_V4_FLOW: 1154 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_UDP | vlan, 1155 RQFPR_IPV4 | RQFPR_UDP | vlan_mask, tab); 1156 gfar_set_basic_ip(&rule->h_u.udp_ip4_spec, 1157 &rule->m_u.udp_ip4_spec, tab); 1158 break; 1159 case SCTP_V4_FLOW: 1160 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask, 1161 tab); 1162 gfar_set_attribute(132, 0, RQFCR_PID_L4P, tab); 1163 gfar_set_basic_ip((struct ethtool_tcpip4_spec *)&rule->h_u, 1164 (struct ethtool_tcpip4_spec *)&rule->m_u, 1165 tab); 1166 break; 1167 case IP_USER_FLOW: 1168 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask, 1169 tab); 1170 gfar_set_user_ip((struct ethtool_usrip4_spec *) &rule->h_u, 1171 (struct ethtool_usrip4_spec *) &rule->m_u, 1172 tab); 1173 break; 1174 case ETHER_FLOW: 1175 if (vlan) 1176 gfar_set_parse_bits(vlan, vlan_mask, tab); 1177 gfar_set_ether((struct ethhdr *) &rule->h_u, 1178 (struct ethhdr *) &rule->m_u, tab); 1179 break; 1180 default: 1181 return -1; 1182 } 1183 1184 /* Set the vlan attributes in the end */ 1185 if (vlan) { 1186 gfar_set_attribute(id, id_mask, RQFCR_PID_VID, tab); 1187 gfar_set_attribute(prio, prio_mask, RQFCR_PID_PRI, tab); 1188 } 1189 1190 /* If there has been nothing written till now, it must be a default */ 1191 if (tab->index == old_index) { 1192 gfar_set_mask(0xFFFFFFFF, tab); 1193 tab->fe[tab->index].ctrl = 0x20; 1194 tab->fe[tab->index].prop = 0x0; 1195 tab->index++; 1196 } 1197 1198 /* Remove last AND */ 1199 tab->fe[tab->index - 1].ctrl &= (~RQFCR_AND); 1200 1201 /* Specify which queue to use or to drop */ 1202 if (rule->ring_cookie == RX_CLS_FLOW_DISC) 1203 tab->fe[tab->index - 1].ctrl |= RQFCR_RJE; 1204 else 1205 tab->fe[tab->index - 1].ctrl |= (rule->ring_cookie << 10); 1206 1207 /* Only big enough entries can be clustered */ 1208 if (tab->index > (old_index + 2)) { 1209 tab->fe[old_index + 1].ctrl |= RQFCR_CLE; 1210 tab->fe[tab->index - 1].ctrl |= RQFCR_CLE; 1211 } 1212 1213 /* In rare cases the cache can be full while there is 1214 * free space in hw 1215 */ 1216 if (tab->index > MAX_FILER_CACHE_IDX - 1) 1217 return -EBUSY; 1218 1219 return 0; 1220 } 1221 1222 /* Write the bit-pattern from software's buffer to hardware registers */ 1223 static int gfar_write_filer_table(struct gfar_private *priv, 1224 struct filer_table *tab) 1225 { 1226 u32 i = 0; 1227 if (tab->index > MAX_FILER_IDX - 1) 1228 return -EBUSY; 1229 1230 /* Fill regular entries */ 1231 for (; i < MAX_FILER_IDX && (tab->fe[i].ctrl | tab->fe[i].prop); i++) 1232 gfar_write_filer(priv, i, tab->fe[i].ctrl, tab->fe[i].prop); 1233 /* Fill the rest with fall-troughs */ 1234 for (; i < MAX_FILER_IDX; i++) 1235 gfar_write_filer(priv, i, 0x60, 0xFFFFFFFF); 1236 /* Last entry must be default accept 1237 * because that's what people expect 1238 */ 1239 gfar_write_filer(priv, i, 0x20, 0x0); 1240 1241 return 0; 1242 } 1243 1244 static int gfar_check_capability(struct ethtool_rx_flow_spec *flow, 1245 struct gfar_private *priv) 1246 { 1247 1248 if (flow->flow_type & FLOW_EXT) { 1249 if (~flow->m_ext.data[0] || ~flow->m_ext.data[1]) 1250 netdev_warn(priv->ndev, 1251 "User-specific data not supported!\n"); 1252 if (~flow->m_ext.vlan_etype) 1253 netdev_warn(priv->ndev, 1254 "VLAN-etype not supported!\n"); 1255 } 1256 if (flow->flow_type == IP_USER_FLOW) 1257 if (flow->h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4) 1258 netdev_warn(priv->ndev, 1259 "IP-Version differing from IPv4 not supported!\n"); 1260 1261 return 0; 1262 } 1263 1264 static int gfar_process_filer_changes(struct gfar_private *priv) 1265 { 1266 struct ethtool_flow_spec_container *j; 1267 struct filer_table *tab; 1268 s32 ret = 0; 1269 1270 /* So index is set to zero, too! */ 1271 tab = kzalloc(sizeof(*tab), GFP_KERNEL); 1272 if (tab == NULL) 1273 return -ENOMEM; 1274 1275 /* Now convert the existing filer data from flow_spec into 1276 * filer tables binary format 1277 */ 1278 list_for_each_entry(j, &priv->rx_list.list, list) { 1279 ret = gfar_convert_to_filer(&j->fs, tab); 1280 if (ret == -EBUSY) { 1281 netdev_err(priv->ndev, 1282 "Rule not added: No free space!\n"); 1283 goto end; 1284 } 1285 if (ret == -1) { 1286 netdev_err(priv->ndev, 1287 "Rule not added: Unsupported Flow-type!\n"); 1288 goto end; 1289 } 1290 } 1291 1292 /* Write everything to hardware */ 1293 ret = gfar_write_filer_table(priv, tab); 1294 if (ret == -EBUSY) { 1295 netdev_err(priv->ndev, "Rule not added: No free space!\n"); 1296 goto end; 1297 } 1298 1299 end: 1300 kfree(tab); 1301 return ret; 1302 } 1303 1304 static void gfar_invert_masks(struct ethtool_rx_flow_spec *flow) 1305 { 1306 u32 i = 0; 1307 1308 for (i = 0; i < sizeof(flow->m_u); i++) 1309 flow->m_u.hdata[i] ^= 0xFF; 1310 1311 flow->m_ext.vlan_etype ^= cpu_to_be16(0xFFFF); 1312 flow->m_ext.vlan_tci ^= cpu_to_be16(0xFFFF); 1313 flow->m_ext.data[0] ^= cpu_to_be32(~0); 1314 flow->m_ext.data[1] ^= cpu_to_be32(~0); 1315 } 1316 1317 static int gfar_add_cls(struct gfar_private *priv, 1318 struct ethtool_rx_flow_spec *flow) 1319 { 1320 struct ethtool_flow_spec_container *temp, *comp; 1321 int ret = 0; 1322 1323 temp = kmalloc(sizeof(*temp), GFP_KERNEL); 1324 if (temp == NULL) 1325 return -ENOMEM; 1326 memcpy(&temp->fs, flow, sizeof(temp->fs)); 1327 1328 gfar_invert_masks(&temp->fs); 1329 ret = gfar_check_capability(&temp->fs, priv); 1330 if (ret) 1331 goto clean_mem; 1332 /* Link in the new element at the right @location */ 1333 if (list_empty(&priv->rx_list.list)) { 1334 ret = gfar_check_filer_hardware(priv); 1335 if (ret != 0) 1336 goto clean_mem; 1337 list_add(&temp->list, &priv->rx_list.list); 1338 goto process; 1339 } else { 1340 list_for_each_entry(comp, &priv->rx_list.list, list) { 1341 if (comp->fs.location > flow->location) { 1342 list_add_tail(&temp->list, &comp->list); 1343 goto process; 1344 } 1345 if (comp->fs.location == flow->location) { 1346 netdev_err(priv->ndev, 1347 "Rule not added: ID %d not free!\n", 1348 flow->location); 1349 ret = -EBUSY; 1350 goto clean_mem; 1351 } 1352 } 1353 list_add_tail(&temp->list, &priv->rx_list.list); 1354 } 1355 1356 process: 1357 priv->rx_list.count++; 1358 ret = gfar_process_filer_changes(priv); 1359 if (ret) 1360 goto clean_list; 1361 return ret; 1362 1363 clean_list: 1364 priv->rx_list.count--; 1365 list_del(&temp->list); 1366 clean_mem: 1367 kfree(temp); 1368 return ret; 1369 } 1370 1371 static int gfar_del_cls(struct gfar_private *priv, u32 loc) 1372 { 1373 struct ethtool_flow_spec_container *comp; 1374 u32 ret = -EINVAL; 1375 1376 if (list_empty(&priv->rx_list.list)) 1377 return ret; 1378 1379 list_for_each_entry(comp, &priv->rx_list.list, list) { 1380 if (comp->fs.location == loc) { 1381 list_del(&comp->list); 1382 kfree(comp); 1383 priv->rx_list.count--; 1384 gfar_process_filer_changes(priv); 1385 ret = 0; 1386 break; 1387 } 1388 } 1389 1390 return ret; 1391 } 1392 1393 static int gfar_get_cls(struct gfar_private *priv, struct ethtool_rxnfc *cmd) 1394 { 1395 struct ethtool_flow_spec_container *comp; 1396 u32 ret = -EINVAL; 1397 1398 list_for_each_entry(comp, &priv->rx_list.list, list) { 1399 if (comp->fs.location == cmd->fs.location) { 1400 memcpy(&cmd->fs, &comp->fs, sizeof(cmd->fs)); 1401 gfar_invert_masks(&cmd->fs); 1402 ret = 0; 1403 break; 1404 } 1405 } 1406 1407 return ret; 1408 } 1409 1410 static int gfar_get_cls_all(struct gfar_private *priv, 1411 struct ethtool_rxnfc *cmd, u32 *rule_locs) 1412 { 1413 struct ethtool_flow_spec_container *comp; 1414 u32 i = 0; 1415 1416 list_for_each_entry(comp, &priv->rx_list.list, list) { 1417 if (i == cmd->rule_cnt) 1418 return -EMSGSIZE; 1419 rule_locs[i] = comp->fs.location; 1420 i++; 1421 } 1422 1423 cmd->data = MAX_FILER_IDX; 1424 cmd->rule_cnt = i; 1425 1426 return 0; 1427 } 1428 1429 static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd) 1430 { 1431 struct gfar_private *priv = netdev_priv(dev); 1432 int ret = 0; 1433 1434 if (test_bit(GFAR_RESETTING, &priv->state)) 1435 return -EBUSY; 1436 1437 mutex_lock(&priv->rx_queue_access); 1438 1439 switch (cmd->cmd) { 1440 case ETHTOOL_SRXFH: 1441 ret = gfar_set_hash_opts(priv, cmd); 1442 break; 1443 case ETHTOOL_SRXCLSRLINS: 1444 if ((cmd->fs.ring_cookie != RX_CLS_FLOW_DISC && 1445 cmd->fs.ring_cookie >= priv->num_rx_queues) || 1446 cmd->fs.location >= MAX_FILER_IDX) { 1447 ret = -EINVAL; 1448 break; 1449 } 1450 ret = gfar_add_cls(priv, &cmd->fs); 1451 break; 1452 case ETHTOOL_SRXCLSRLDEL: 1453 ret = gfar_del_cls(priv, cmd->fs.location); 1454 break; 1455 default: 1456 ret = -EINVAL; 1457 } 1458 1459 mutex_unlock(&priv->rx_queue_access); 1460 1461 return ret; 1462 } 1463 1464 static int gfar_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd, 1465 u32 *rule_locs) 1466 { 1467 struct gfar_private *priv = netdev_priv(dev); 1468 int ret = 0; 1469 1470 switch (cmd->cmd) { 1471 case ETHTOOL_GRXRINGS: 1472 cmd->data = priv->num_rx_queues; 1473 break; 1474 case ETHTOOL_GRXCLSRLCNT: 1475 cmd->rule_cnt = priv->rx_list.count; 1476 break; 1477 case ETHTOOL_GRXCLSRULE: 1478 ret = gfar_get_cls(priv, cmd); 1479 break; 1480 case ETHTOOL_GRXCLSRLALL: 1481 ret = gfar_get_cls_all(priv, cmd, rule_locs); 1482 break; 1483 default: 1484 ret = -EINVAL; 1485 break; 1486 } 1487 1488 return ret; 1489 } 1490 1491 static int gfar_get_ts_info(struct net_device *dev, 1492 struct ethtool_ts_info *info) 1493 { 1494 struct gfar_private *priv = netdev_priv(dev); 1495 struct platform_device *ptp_dev; 1496 struct device_node *ptp_node; 1497 struct qoriq_ptp *ptp = NULL; 1498 1499 info->phc_index = -1; 1500 1501 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)) { 1502 info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE | 1503 SOF_TIMESTAMPING_SOFTWARE; 1504 return 0; 1505 } 1506 1507 ptp_node = of_find_compatible_node(NULL, NULL, "fsl,etsec-ptp"); 1508 if (ptp_node) { 1509 ptp_dev = of_find_device_by_node(ptp_node); 1510 if (ptp_dev) 1511 ptp = platform_get_drvdata(ptp_dev); 1512 } 1513 1514 if (ptp) 1515 info->phc_index = ptp->phc_index; 1516 1517 info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE | 1518 SOF_TIMESTAMPING_RX_HARDWARE | 1519 SOF_TIMESTAMPING_RAW_HARDWARE; 1520 info->tx_types = (1 << HWTSTAMP_TX_OFF) | 1521 (1 << HWTSTAMP_TX_ON); 1522 info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) | 1523 (1 << HWTSTAMP_FILTER_ALL); 1524 return 0; 1525 } 1526 1527 const struct ethtool_ops gfar_ethtool_ops = { 1528 .get_drvinfo = gfar_gdrvinfo, 1529 .get_regs_len = gfar_reglen, 1530 .get_regs = gfar_get_regs, 1531 .get_link = ethtool_op_get_link, 1532 .get_coalesce = gfar_gcoalesce, 1533 .set_coalesce = gfar_scoalesce, 1534 .get_ringparam = gfar_gringparam, 1535 .set_ringparam = gfar_sringparam, 1536 .get_pauseparam = gfar_gpauseparam, 1537 .set_pauseparam = gfar_spauseparam, 1538 .get_strings = gfar_gstrings, 1539 .get_sset_count = gfar_sset_count, 1540 .get_ethtool_stats = gfar_fill_stats, 1541 .get_msglevel = gfar_get_msglevel, 1542 .set_msglevel = gfar_set_msglevel, 1543 #ifdef CONFIG_PM 1544 .get_wol = gfar_get_wol, 1545 .set_wol = gfar_set_wol, 1546 #endif 1547 .set_rxnfc = gfar_set_nfc, 1548 .get_rxnfc = gfar_get_nfc, 1549 .get_ts_info = gfar_get_ts_info, 1550 .get_link_ksettings = phy_ethtool_get_link_ksettings, 1551 .set_link_ksettings = phy_ethtool_set_link_ksettings, 1552 }; 1553